Header ring



FIG. 1 is a perspective view of a header ring embodying the invention;

FIG. 2 is another perspective view of the header ring of FIG. 1;

FIG. 3 is a high pressure side view of the header ring of FIG. 1;

FIG. 4 is a top view of the header ring of FIG. 1;

FIG. 5 is a low pressure side view of the header ring of FIG. 1; and,

FIG. 6 is a section view of the header ring of FIG. 1 betterillustrating the shape of the ring.

CLAIM We claim the ornamental design for a header ring, as shown anddescribed.